Discussion
What is the structure of IF7 ?
Answer: B
\(\mathrm{IF_7}\) is a pentagonal bipyramid.
Iodine contributes seven bonding pairs and has no lone pair, so by VSEPR the seven pairs arrange themselves as \(sp^3d^3\) - five fluorines in an equatorial plane at 72° and two along the axis. It is one of the few molecules with this geometry.
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